Bobbin release for weft-replenishing mechanism



DSC. I, QZQ, A, L CHEVRETTE LFSSQ BOBBIN RELEASE FOR WEFT REPLENISHINGMECHNISM Filed June 8, 1923 2 Sheets-Sheet l ,mmnllllllllllll a/4 /1711il:

Dec. 1Q, 1929. A. J. CHEVRTTE L73929 BOBBIN RELEASE FORWEFTVREPLENISHING MECHANISM Filed June 8, 1928 2 Sheets-Sheet 2 40 EM l`L 4. IM wl "i "HW 5l W 42 U1 W'" 44 V M H Imi f S l e v J4" ,5

` P 69 i e @f7 W1" f 2? lil-"gr Z 62 4 0 "l 5 Patented Dec. l0, 1929@UNITED STATES PATENT OFFICE AUGUSTIN. J. CHEVEETTE, OEWOEOESTEE,MASSACHUSETTS, ASSIGNOR To CROMP- TON a KNOWLES LOOM WORKS, OEWORCESTER, MASSACHUSETTS, A OORPOEA- TION OF MASSACHUSETTS BOBINvI'IIELEASEI FOR W'EFT-REPLENISHING MECHANISM Application led .Tune 8,

This invention relates to improvements in bobbin releasing' devices moreparticularly for multicolor weft replenishing mechanisms and it' is the'general object ofthe invention toiprovide a mechanism of this type whichwill operate when the lay isin its rearward position so'fthat'an-vuntransferred bobbin' will be 'released `at atime when it may fall intothe bobbin 'can'with' as little interference as possible.

When abobbin has once 'reached transfer position in a multicolor weftreplenishing l'oom'there is ordinarily no wayto restore it to the stackof bobbins from which it was delivered should the shuttle be improperlyplaced'and therefore unable yto accept the new bobbin. Underk theseconditions the bobbin must be released, otherwise there would be dangerthatit'would be' inserted' in the Wrong shuttle should the shuttlesshift on the next pick ofthe loom.

The deviceiat-pres'ent employed to release the bobbin is that operatingon thev principle set forth-in patent to Lauzon No. 1,261,563. In thatpatentlprovision-ismade for keeping the bobbin support inopen positionat all times except'when it is desiredto transfer a new bobbin, at whichtime'the supportis moved to bobbin supporting position to hold thebobbin properly under the transferrer arm. As the Vmagazine isreset withthe lay on'front'center the-bobbin support is moved rearwardly or toitsbobbin releasing position,'the-eifect of which is to drop a bobbindirectly on the shuttle in the shuttlebox thereunder. v y

Such an operation occasionally results in the catching of the bobbin bysome part of the lay with resultant breakage 'and it is an importantpart ofthe present invention to retain the general principle of theLauzon patent' but del'ayfmovement of the bobbin support to releasingposition'until the lay has reached its rearmost position after transfer.

The usual weft replenishing mechcanism for multicolor weft lreplenishinglooms employs a bobbin support of the type shown in patent to Ryon No.1,366,950 which incoporates the Lauzon principle and it is a moreparticular `object of my present invention 'several stacks.

Serial No. 283,977.

to add to the bobbin support-of the Ryon patent a member which willcooperate with the Lauzon setting stud, said part to be moved to itsfinal position to effect movement ofthe support by the lay on itsbackward movement.

It is a still further obj ect of my present 4invention to provide meansfor moving the bobbin support actuating member to a position where itwill clear the .lay as the latter moves back and forth in the loom.

Vith these and other objects in view which will appear as thedescription proceeds, my invention resides in the combinationandarrangement of parts hereinafter described and set forth in theclaims.

In the accompanying drawings, wherein a convenient embodiment of myinvention vis set forth,

Fig. 1 is a side elevation of amulticolor weft replenishing mechanismhaving my invention applied thereto as seen from the interior of theloom,

. Fig. 2 is an enlarged view looking'in the direction of arrow 2, Fig.1, y

Fig. 3 is aview similar to Fig. 2 but with certain parts removed to showmore clearly the relation of the spring which operates the knuckle oint,

Fig. 4 is a detailed side elevation of a' portion of the replenishingmechanism showing the bobbin support as seen from 'a direction oppositethat in which Fig. 1 is taken, the parts being in normal or bobbinreleasing position,

Fig. 5 is a view similar to Fig. 4 but with the parts in bobbinsupporting position, and F Fig. 6 is a horizontal section on line 6-6 ofig. 5. y

Referring particularly to Figs. 1, 2 and 3 the weft replenishingmechanism 10 is shown as having a plurality of vertical slides 11 whichcontrol the release of bobbinsfrom the The particular slide 11 which isto be called into action is vselected by the socalled color slide 12, abell crank lever 13 positioning said color slide longitudinallyrelatively to the vertical slides 11. The lever is pivoted to av stand14 secured to the rear of the magazine frame 10.

Pivotally connected as at 15 to the bracket 14 is a shuttle feelercarrier 16 to which is secured a pressed metal shuttle feeler 17 theoffice of which is to detect for the shuttle and revoke or preventtransfer should the shuttle be improperly boxed. The shuttle feelercarrier has securedl thereto a stud S which extends substantiallyparallel to the lay L.

The raising and lowering of the shuttle feeler 17 and its carrier iseffected through a vertical rod 18 which is connected as vat 19 to theshuttle feeler carrier. The upper end of said rod 18 is connectedto anarm 20 secured to a rock shaft 21 to the forward end of which is securedan arm 22. A' rectangular block 23 is pivotally supported by the arm 22andlextendsthrough a slot 24 formed in arm 2 5 of-lever 26 pivoted as at27 to the upper end' ofy the frame 10'. A depending rod 28 secured-tothelever 26 controls the translever together with the arm 22 definitely ini one of two positions. Under normal conditions said'v spring willoperate to hold the parts asshown in Fig. 2 with adjustable stopscrew"30l carried by Varm 25 in engagementwith affixed part of the frame10 such as a lug31 which receivesfonevof the upper tie rods for themagazine. When the lever 26 is moved'in a counter-clockwise directionaround stud 27from the position lshown in Fig. 2, a secondl stop screw32 will engage the lug to limit movement of said lever and zii-m22 underinfluence of the spring29. In this way the spring operatesto hold thearm 20 and shaft 21 to which it is secured definitely in two differentangular positions and it is in this way" that the position of theshuttle feeler' vcarrier V16 'and therefore the'stud 'S is determined.

Referring particularly to Figs. 4, 5 and 6 I have shown a particularmethod of supporting thelbobbin where it will be seen that a stand 4Qsecured to the rear part of the weft replenishing lframe 10 carriesafstnd 41 to which is pivoted a link 42 having set screw`43 therein-Said set screw acts on a pin 44 carried by thejupwardlyprojecting arm'45of thebobbinsupporting member 46. The latteris piv'oted as at 47 to thelower end. of. a suspension arm 48,1nountedy on a fixed tiered49ffor1ning'a part of the weftv replenishing mechanism., -As shown inFig. 5, a torsion spring 50 surrounds theV tie rod 49 and has oneendthereof secured to the arm'48 and the other end secured to a collar 51secured in adjusted angular position to the rod 49. he effect ofthetorsion spring is to move thearm'48forwardly or in a clockwise direc-Vtion .around tie rod. 49 as 'viewed lin Figs. 4

and 5. Stopv screw 52 engages a part of the frame. lOto limit movementof the suspension arm 48 to the left as viewed in Figs. 4 and 5 underaction of spring 50. A lug 53 formed as part of arm 48 receives theupper end of a light tension spring 54 the lower end of which isconnected to arm 45 to hold the pin 44 normally against screw 43. Themagazine has a forward butt support 55 which cooperates with the arm 46to support the head or butt of a bobbin in transfer position. As willappear hereinafter the spring 5() is weaker than spring 29. Y

The matter thus far described is substantially the sameas shown inthepreviously mentioned patents and for a further description of thestructure, and operation of the magazine reference may be hadto patentto RyonNo. 1,030,748.

As'previously stated it may happen that a bobbin will remain in theposition shown in Fig. 5 after the time allotted for transfer due to animproper boxing of the shuttle and under these conditions it isessential that the bobbin be released. My present invention re-l videdwith a notch which is defined byv a.

rearwardly and downwardly extending face 65 which intersects with arearwardly and upwardly extending surface 66,said .notch beingdesignatedherein at 67. I form the upwardly andrearwardly.extendingsurface 66 so that the upperportion thereof which terminates in thenotch 67 is preferably nearer the axis of thestud 61 than is the lowerportion thereof.` In other words the surface 66 is'preferably inclinedtoward the axis of the setting-lever. I do not wish to be limitedstrictly to this design of the notch, although I find it convenient.

f A light tension spring 68 is interposed between a portion vof the arm45 as at 69 andthe setti-ngjlever and Vtends normally to `move thesetting lever in a yleft'hand direction las viewed in Fig. 5.-Such'motion is limited by a stop 7 0 carried by the extension 60andengaging a portion of the setting lever so as to hold the latter inthe position shown in Fig. 5.

That portion of the stud S which lies under the Yforward end of thelsetting lever may be formed with an angular vor knife edge 71 as shownclearly in Figs. 4 and 5, said knife edge being designed to enter thenotch 67.

Under normal conditions the parts are in the position shownin Fig. 4with supporting arm 46 in rearward position and theshuttle feeler '17 inraised position, the stud S being in its highest position and located inthe notch 67 When a transfer is about to takeV place the rod 18 will bedepressed to'inove the afi stu'dS downwardly. V/TheLstop''Owvill operateto yprevent Athe arm64 of thersetting lever from following thelstuddownwardly so that as the rod 18 descendsthe knife edge l'will bedisengaged from the notch 67. As

soon'as stud S moves out of controllingl position with respect to'thesettingvlever 62 the torsion spring will move the arm 48 and thebobbin support 46 to the left until 'such mi motion is arrested by stopscrew y'52. The

support 46 will come to rest in such a positionthat the distancebetween'the same and the forward bobbin'suport is less than the diameterof the bobbin B. A'bobbin will then bereleased from one or another ofthe to restore the parts to the position shown in,

Fig. 2, thus lifting the stud'S to the position shown in Fig. I4 in fulllines. By the previous movement of the support 46 to the left underinuence of the torsion spring 50 the setting lever 62 was moved over thestud S so that as the latter is raised it will engage the under side ofarm 64 of the setting lever and move the same to the dotted lineposition shown in Fig. 5. This operation will take place whilethe lay isnearing front center on the pick when transfer should take place and thespring 29 will be of sufficient strength to hold the stud S in thedotted line position shown in Fig. 5. Theisetting lever-62 is thereforerocked about its axis to move the arm .68 thereof tothe low positionindicated in dotted lines in Fig. 5.

Astheloom continues to operate the lay L will'move rearwardly or fromthe fullfline position shown in Fig. 5 to the right to carry bunter 72into engagement with the ar`m 63 of the setting lever and move thelatterrearwardly. By reason of the fact that the spring 29 has astrongereifect than that of torsion spring 50 the latter will bestrained and the stud S will be able to remain in vraised position withthe arm 64 sliding across the top thereof. During ,the timethat vthebunter 72 is in engagement with the lever 63 the support 46 will bemovedto the right asviewed lin Fig. 'and will ultimately assume theposition shown in Fig. 4, where it will be'spaced sufliciently from theVforward bobbin support to release the bobbin. This condition takesplace, it will be unedrstood,`when the lay is practically in itsrearmost position so that the bobbin may be discharged withoutinterfering with the lay.

During the backward movement of'the'setting lever the forward end of thevarm 64 will ultimately pass over the knife edge 71, at which time thelight spring 68 willfmove the setting lever in a counter-clockwisedirection around'the Astud 6l until the knife edge is seated in thenotch 67 or movement of the setting2 lever isarrested by the stop 70.This additional motion of the setting lever 62 under action of thetension spring 68 will move the arm 63 an additional amount, so that thesame will be out of the path of the bunter 72 as the lay moves back andforth. By reason of the spring 68 and the surface 66. cooperating withthe knife edge 7l I am therefore able to move the setting lever to aposition `where it will clear the lay, the inclination of the surface 66assisting the spring 68 in rocking the setting lever. The parts thusrestored to normal position are rea'dy for the repeated indication whichwill be given due to the failure to transfer, should the previouslyindicated shuttle remain in action and again be presented under themagazine.

From the foregoing it will be seen that I have provided a simple settinglever which may be added to the form of bobbin support generally used,said setting leverbeing operated on the backward stroke of thelay tomove the bobbin support to bobbin releasing position so that. anuntransferred bobbin may be ejected from the magazine at a time when thelay rcannot engage the same to cause damage either to the magazine orthe hobbin. It will further be seen'J that I have formed that portionofthe setting lever which engages the stud S so as to retainthe parts inbobbin releasing position so long as the stud S remains raised after thefirst complete rearward movement of the lay following a revocation oftransfer. It will also be seen that the light spring 68 together withthe surface 66 operates to hold the setting lever out of engagingposition with the bunter 72. While I have set forth the fact that thesurface 66 is to be inclined slightly toward the axis of the stud 6l yetif the spring 68 be sufficiently strong I will not necessarily be heldto this relation of the parts.

Having thus described my invention it wil i be seen that changes andmodifications may be made thereiny by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is '1.Ina weft replenishing mechanism for looms, a lay, a pair of movablejointed bobbin supporting elements, means normally holding said elementsin open bobbin releasing position, and a resetting device carried by oneof the elements and moving therewithto beengaged and moved by the lay tomove said elements to open bobbin releasing position.

2. In a weft replenishing mechanism for looms, a lay, a suspension armmovable about a fixed pivot, a movable bobbin engaging support pivotedto the arm, a resetting device pivoted to the suspension arm andpositioned to engage'the lay' as the latter moves rear,

a bobbin releasing position.

3. In a weft replenishiiig mechanism for looms, a lay, a pair of movablebobbin supporting elements which are jointed together, one of saidyelements being movable about a fixed pivot, a resetting device carriedby the latter element and movable Atherewith to a position to engage thelay to'cause the latter to move the elements to open bobbin releasingposition as `the lay moves rearwardly.

I. In a weft replenishing mechanism for looms, a lay, a suspension armmovable about a fixed pivot, a bobbin support moving with yand ypivotedto the suspension arm, a setting device pivoted to the suspension arm,and means movable under control. of the replenishing mechanism andeffective when in normal position to engage the resetting device to holdthe bobbin support in open bobbin releasing position, said means whenmoved by the replenishing mechanism releasing the resetting device andthe latter being engaged by the lay as the lay nears the end of itsbackward stroke to be moved rearwardly by the lay to carry the bobbinsupport rearwardly.

5. In a weft replenishing mechanism for looms, a lay, a suspension armmovable about a iiXed pivot, a bobbin support moving with and pivoted tothe suspension arm, a setting device pivoted to the suspension arm, andmeans movable under control of the replenishing mechanism and effectivewhen in normal position to engage the resetting device to hold thebobbin support in open bobbin releasing position, said means wheii movedby the replenishing mechanism releasing the resetting device and thelatter being engagedby the lay as the lay nears the end of its backwardstroke to be moved rearwardly by the lay to carry the bobbin supportrearwardly,

said resetting device being moved by the lay into holding engagementwith the means.

6. In a weftv replenishing mechanism for looms, a lay, a pair of movablepivoted elements one .of which moves about a fixed axis and the other ofwhich has provision for engaging and supporting` a bobbin, a resettingdevice pivotally mounted to one of thek elements, and means undercontrol of the replenishing mechanism normally engaging the resettingdevice normally to hold said elements in open bobbin releasing position,said means being movable by the replenishing mechanism to release theresetting device, whereby the elements are movable to bobbin supportingposition, the lay on the backward stroke thereof engaging the resettingdevice to move the latter together with the elements rearwardly and toestablish holding relation between the'resetting device and the means.

' 7. In a weft replenishing mechanism for looms, a lay, a suspension armmovable about alixed axis, a bobbin support pivoted to and moving withthe suspension arm, a setting lever pivoted to the suspension arm, and astud movable from normal to transfer position by the replenishingmechanism prior to the time of transfer', said stud when in normalVposition engaging the setting lever to hold the latter together with thebobbinsupport in open bobbin releasing position, said stud when moved bythe replenishing mechanism to transfer position to be disengaged fromthe setting lever, whereupon the latter together with the bobbin supportis free to move to bobbin supporting position.

8. In a weft replenishing mechanism for looms, a lay, a suspension armmovable about a fixed axis, a bobbin support pivoted to and moving withthe suspension arm, a setting lever pivoted to the suspension arm, and astud movable from normal to transfer position by the replenishingmechanism prior to the time of transfer, said stud when in normalposition engaging the setting lever to hold the latter together with thebobbin support in open bobbin releasing position, said studV gether withthe bobbin support vis free tov move to bobbin supporting positiomsaidstud when being returned to normal position engaging the setting leverto vmove the same into the path ofthe lay, the lay to engage the settinglever as said lay nears the limit of its rearward movement to move thebobbin support to open bobbin .releasingposition and to eifect holdingengagement between the setting lever and the stud.

9. In a weft replenishing mechanism for looms, a lay, a pair of movablebobbin supporting elements pivotally connected together, one of saidelements movable about afixed axis and the other of said elements havinglmeans forv supporting a bobbin, a setting device pivoted to one of theelements, means movable from Anormal to transferv position by thereplenishing mechanism, said means normally lengaging the setting deviceto hold the latter out of the path vof the lay, said means when beingmoved from transfer back to normal position engaging the setting deviceto move the same inte the path of the lay, whereupon the latter in itsrearward stroke engages the setting device to move the bobbin supportingelement to open bobbin releasing'` position and at the same time effectholding engagement between the means and the setting device.

10. In a weft replenishing mechanism for looms, a lay, a suspension arm,a bobbin support pivoted to and moving with the suspension arm, asetting lever pivoted to the sus pension arm, means defining a notch insaid setting lever, astud movable vby the replenishing mechanism fromnormal to transfer position, said stud normally being located in thenotch to hold the setting lever together with the bobb-in support inopen bobbin releasing position, said stud when moving from normal totransfer posit-ion being disengaged from the setting lever, whereuponthe setting lever together with the supporting arm and bobbin supportare free to move to bobbin supporting position, and said stud when beingreturned to normal position from transfer position moving the settinglever into the path of the lay, whereupon the latter at the end of itsrearward stroke will engage said settin lever to move the same togetherwith the bobbin support rearwardly and simultaneously effect return ofthe stud into the notch in the setting lever.

In testimony whereof I have hereunto afg xed my signature.

AUGUSTIN J. CHEVRETTE.

